*{margin: 0;padding: 0;}
.swiper{
    width: 600px;
    height: 400px;
    border: 1px solid #333;
    margin: 50px auto;
    position: relative;
}
.swiper-content,img{
  position: absolute;
  left: 0;
  top: 0;
}
.swiper-content{
    width: 100%;
    height: 100%;

}
.swiper-content img:first-child{
    z-index: 100;
}
.swiper-content button{
    border: none;
    width: 40px;
    height: 70px;
    position: absolute;
    top:50%;
    transform: translateY(-50%);
    z-index: 101;
    background: url("../images/icon-slides.png");
    outline: none;
}
#left{
    left: 0;
    background-position-x: -84px;
}
#right{
    right: 0;
    background-position-x: -126px;
}
#left:hover{
    background-position-x:0;
    cursor: pointer;
}
#right:hover{
    background-position-x:125px;
    cursor: pointer;
}
#btns span{
    display: inline-block;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    margin-right: 5px;
    background-color: #333;
    border: 1px solid #fff;
}
#btns{
    width: 100%;
    text-align: center;
    position: absolute;
    bottom: 20px;
    z-index: 200;
}
#btns .current{
    background-color: orangered;
}
